drm/i915/sdvo: Fail gracefully if the TV dotclock is out of range

Instead of warning and continuing with bogus state when the
requested dotclock isn't acceptable just print some debug
spew and fail gracefully.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230705202122.17915-8-ville.syrjala@linux.intel.com


Reviewed-by: Jani Nikula <jani.nikula@intel.com>